Oil -gas separation jar and oil -gas separation device and oily chromatography device

The utility model relates to an oil -gas separation jar and oil -gas separation device and oily chromatography device, oil -gas separation jar include cylinder body and spacing block, and upper and lower cavity is separated into with the cylinder body inner chamber to the spacing block, and the piston direction of oil -gas separation jar moves assembles in cavity down, is provided with the oil feed passageway, produce oil passageway and the hydro -cylinder gas vent that feed through with last cavity on the oil -gas separation jar, be provided with leading the oilhole and spraying the hole perhaps of the upper and lower cavity of intercommunication on the spacing block the oil of leading that is provided with the upper and lower cavity of intercommunication on the spacing block sprays the hole, and the upper and lower action of the piston through the oil -gas separation jar realizes transformer oil's the effect that sprays realizing fast that oil gas is balanced, carries out dynamic dilatation in effectual deg